Hana Uzaki was feeling giddy. Tonight was date night for her and Sakurai, and it was one that she was not gonna let him forget. It was currently their second anniversary together and she couldn’t be happier. They were living together since it was close to the college, they always cooked meals together, and Sakurai always knew just what Uzaki needed when he railed her.

It’s true, after their first time on their first anniversary, Uzaki and Sakurai started acting like a couple of rabbits. Of course, they were safe with it like any normal adults, they just had sex a lot. They had also done a lot of experimenting too, switching between submissive and dominant roles regularly, trying some role play, and other things.

 But Uzaki wanted tonight to be special, she had been preparing for a while to make this night the best it could be. While Sakurai was stuck in a bevy of classes, Uzaki was able to go to a special appointment she had planned. She wanted to pick up a transformation serum to spice up tonight and she had the perfect one in mind, a Succubus.

Uzaki started planning this a couple of months ago after she went down the rabbit hole of the transformation serum website, as that’s where they bought their preventatives and STI/STD prevention pills. She didn’t wanna go too wild for their first one, but she also didn’t want it to be forgettable. She couldn’t make up her mind until their recent Halloween escapade. Uzaki had gone as a little devil with horns and a suit that accentuated her curves, the costume didn’t last the night as Sakurai tore it off of her in a wild rush of passion.

Now that she had an idea in mind, Uzaki got to work, trying to find a Succubus serum that would make their whole night. She finally settled on something called the Succubus experience. It was a whole thing, first, she had to go down to the company’s store to get her blood work and DNA on file as a safety requirement. Next, got to pick out an outfit fitted to the form she’ll take thanks to measurements made with the blood work. Finally, got briefed on what exactly she got with the Succubus serum. She’d get the usual stuff; wings, horns, a tail, but also she’d get a few ‘magic’ spells. As if that wasn’t enough, if Uzaki could get Sakurai to take a little tablet, she could manipulate his body in minor ways too.

Needless to say, when Uzaki got home, she was ready for Sakurai to join her. Thankfully, she just got a text saying that he was done with classes and his workout just finished and that he was on his way home. That meant Uzaki only had ten minutes to get everything ready. She started by taking Sakurai’s special tablet that she got and dumping it in a protein shake, an after-workout ritual that he always did. She then made her way into the bedroom with her new outfit and serum.

Uzaki laid out her outfit which was basically a bunch of leather straps with a pentagram for the chest piece. With nothing else standing in her way, Uzaki plunged the needle into her arm and started her transformation. Uzaki felt her blood begin to pump through her body as two bumps began to form on her head. Two black horns began to push out of her forehead while two bumps formed on her back. Uzaki was too focused on her new horns to notice the floor distancing itself from her, getting slightly taller due to her new body.  As she stopped getting taller, Uzaki noticed that her tongue was sitting weirdly in her mouth before it got more natural. She rolled out her tongue to suddenly find that it was longer, reaching down to her neckline, and was forked like a snake. “Woah, that’s definitely weird. It’ll be fun to use though.” Uzaki said while chuckling. Uzaki’s laugh was cut off when she suddenly lurched forward, giant black bat wings had burst from the bumps on her back. She had to catch her breath as she suddenly found that could control her wings. She started with a few tentative flaps before increasing her speed and actually lifting off the floor and flying.

“Ha ha! I could get used to this!” Uzaki cheered as she floated off the ground. As she lowered herself back to the floor, she felt a tightness in her chest. Her already massive breasts began to swell and perk up, growing larger and larger by the second. She soon surpassed her own mother’s bust before they finally settled down nearly ten cup sizes larger. Uzaki gave her new bust a tight squeeze, they were firm but also gave the right amount of squish, and they didn’t sag too. “Damn, mom would love this, maybe I can get the lift and perkiness part in a permanent form for her.” Uzaki thought, getting lost in thought.

While she was lost in thought, Uzaki didn’t hear the front door open. Sakurai walked in and set down his bags, still holding flowers in his other hand. “Hana, I’m back.” He shouted into the apartment.

Uzaki gasped as she realized he was a few minutes early. She looked down at her still changing body, her waist was slowly shrinking while her hips pushed out more. “O-okay! I’m getting dressed in here so don’t come in!” She shouted, rushing to lock the door. “I already made your protein drink for you!” She added, hoping it would buy her time.

Sakurai shrugged as he set down the flowers and picked up the glass on the counter. As he drank the protein shake, he could tell it tasted a little different but he couldn’t place his finger on it.

Meanwhile, Uzaki was trying her best to speed up the process of changing while also getting into an outfit that didn’t fit yet. Her hips had fully popped out while her ass kept swelling, growing to a size reminiscent of her normal bust size. The final finishing touches to Uzaki’s body finally appeared as a heart-tipped tail began to grow out right above her ass, and at the same time, a large tattoo of a heart with thorns etched itself right on top of her womb.

It took her a second to get used to all the new senses, her horns, her wings and tail, plus her new powers. She could sense Sakurai in the other room, she could smell him though that was more due to him just having worked out. She could feel her libido rising and that meant it was time to get to work. Uzaki let out a sigh of relief as her outfit now fit her perfectly. She pushed her breasts through the straps on her chest into position, they were out in the open with the downward tip of the pentagram nestled between her breasts. Her tattoo was highlighted by straps that formed a heart around it, her pussy and ass were laid bare for her victim to see. Uzaki looked sexy and she knew it. “It’ll take some inhuman strength to rip this outfit,” Uzaki said to herself, remembering the Halloween costume. “But if he does, it’ll be hot as hell.” She said, walking towards the door.

Sakurai had just finished cleaning up the glass he drank out of when Uzaki finally opened the door. He nearly dropped the glass when he saw her. She was stunning, the way the lights shone off her hair and outfit, the way it clashed with the dark bat wings and horns. Sakurai couldn’t believe how hot she looked! He even pinched himself to make sure he wasn’t dreaming.

On the other side of the room, Uzaki suddenly felt energized! If she had to guess, it was from Sakurai’s still rising lust and it was delicious. “I thought you would like this.” She said with a smile.

“U-uh, yeah, you look really hot.” Sakurai stuttered, trying to look her in the eyes instead of staring at her body. He was already aware that she had changed, his first hint being the wings flapping idly and the tail swinging around, his second was that he didn’t have to crane his neck to talk to her. He also had definitely noticed her enlarged assets but was still trying not to blatantly stare.

“Why thank you Sakurai. What’s say you and I start celebrating our anniversary?” Uzaki asked, dragging Sakurai closer.

“A-are you sure? I was thinking we could go and get dinner or something?” Sakurai asked, trying to remain civilized and not a sex fiend.

“Oh, but my meals right here!” Uzaki said, giving Sakurai a devilish smile as she used her first magic spell. Her body began to emit a pheromone that bombarded Sakurai’s senses.

Sakurai was nearly at his limit, his hands were shaking as Uzaki held onto him. He was already trying not to give in to his urges and the pheromone just pushed him over the edge. Her scent flooded his nostrils like a bottle of perfume had just been sprayed in his face. He could feel the sweat rolling down his body, his rock-hard cock straining against his shorts, and Hana’s heavenly scent was just what he needed. “Screw it!” He shouted, grabbing her by the waist and picking her up with ease. He quickly carried her into the bedroom while locking lips with her, quickly switching to a French kiss.

Uzaki kissed back with fervor, using her new tongue to go as far into Sakurai’s mouth as she could. He pulled back in surprise, Uzaki rolled at her tongue in a teasing fashion as he stared at her.

“Damn that was hot,” Sakurai said, going back in for seconds. The two college students made out wildly with passion, only breaking apart to breath before going back in. Sakurai sat down on the bed with Uzaki straddling his lap, finally breaking the kiss for now. “So… what else can that tongue do?” He asked.

“Let me show you, I’m feeling pretty hungry anyway,” Uzaki said, climbing off of Sakurai and pulling down his shorts. Uzaki licked her lips when she saw the large bulge in Sakurai's boxers, her hands teasing the waistband before pulling it back and freeing his cock. She leaned in close and took a deep whiff of his musk, it was intoxicating, to say the least, and it was so much stronger thanks to his workout. She rolled out her tongue and licked the shaft to lubricate it, watching Sakurai shudder as she did.

She lightly grasped his cock and slowly began to stroke it up and down, getting faster and slower just to tease him. She enjoyed watching him squirm as he didn’t know what to do with himself, his hands hovering in the air as if he was thinking about grabbing her. “I thought you shouldn’t play with your food?” He asked, joking around with her.

“I guess you’re right, I shouldn’t,” Uzaki said with a devilish smile. She wrapped her tongue fully around Sakurai’s cock before taking the tip of it and swallowing down to the base, a feat that normally took Uzaki a little to work up too. She began to bob her head with speed and vigor that rocked Sakurai to his core.

Now Sakurai had gotten blowjobs from Uzaki before, she was getting better over time but this was on a completely different level! Her mouth was wrapped tightly around his dick but she moved and sucked with ease, he could even feel her tongue swirling all around inside. He was already reaching his limit! “H-Hana!” Sakurai grunted. He grabbed Uzaki by the horns and slammed her down onto his cock.

Uzaki let out a muffled gasp before Sakurai emptied his load into her mouth. Since she had his cock all the way in her mouth, she was forced to swallow his cum, not that she wasn’t planning to do it anyway. She swallowed every last drop she could as if it was the only thing she could eat. With every drop, she could feel herself getting more powerful. After Sakurai’s final shot, she pulled herself off Sakurai’s cock with a satisfying pop. “You taste delicious Senpai.” She said with a grin.

Sakurai was breathing heavily as Uzaki pulled herself off his cock. “You… you gotta give me a minute. I… I didn’t expect it to be that intense.”

“Aww, but I’m still hungry,” Uzaki said with a fake pout. “I can fix your energy problem.” She said as her eyes started glowing red. She leaned in and kissed the tip of Sakurai’s softening cock, using another magical spell.

Sakurai felt a sudden surge of energy and list as Uzaki kissed his cock, blood shooting south and making him erect once more. Many thoughts were swarming through his head, how did she do that, how do I feel like I’m harder than before, am I going to survive tonight? He didn’t have time to think about the answers as Uzaki began to rest her gigantic tits on his lap, smothering his cock in between the mountains.

Uzaki began to use her tongue to lube Sakurai’s cock, massaging the massive rod between her chest while giving it kisses every once and a while. Sakurai was overwhelmed by the sensation of Uzaki’s breasts and her tongue that he couldn’t hold back again. “C-coming!” He shouted as he came, coating Uzaki’s face and chest in his cum.

Uzaki gave him another grin as she began to lick up his semen from her chest and face, cleaning off his cock as well. She was filled to the brim with power and lust, she couldn’t hold back any longer. “Enough goofing around, it’s time for the main course!” She said, pushing Sakurai onto his back. She performed the hardening spell once again to bring back Sakurai’s erection, getting up on the bed with him.

Sakurai watched Uzaki lift herself up, getting ready to ride his cock when she suddenly stopped. “Is something wrong?” He asked, worried that she might need a break.

“Not exactly, something inside me just feels…” Uzaki began to say while staring at his cock. Inside her head, succubus instincts were starting to take hold and guide her on her next move. She bent down close to Sakurai’s cock and performed a new spell.

Sakurai watched with intrigue as she cupped his balls and wrapped a hand around his cock. She began to whisper something while her eyes started glowing before a surge of pleasure washed over Sakurai. He watched as his balls began to swell and grow larger, his cock getting longer and thicker. After Hana was done, he was nearly a foot long and had a six-inch girth. “Damn Hana, are you gonna be able to take all that?” Sakurai asked, concerned for his girlfriend.

“Absolutely, what kind of Succubus would I be if I couldn’t take it all!” Uzaki said, smiling as she positioned herself over Sakurai's new mast. She lowered herself onto Sakurai’s mast with general ease, moaning as she took him all in.

Sakurai bit his lip as Uzaki began to bounce up and down while riding his cock. When Sakurai and Uzaki started having sex, she had a tight grip like Sakurai had expected, and over time had loosened her up a bit. However, thanks to her Succubus transformation it felt like Uzaki’s walls were clamping down on his cock even harder than her first time. “God, you’re so tight!” He gasped.

“Oh, do you enjoy that? Well, maybe I should give you what you want.” Uzaki smirked, tracing her womb tattoo which caused it to glow. She moaned as her walls gripped Sakurai’s mast even tighter, drawing both of them to their limits. Uzaki bounced faster and faster on Sakurai’s cock, moaning as she tried to drain him. “Come on Sakurai, give me my prize!” She shouted as he came.

Uzaki moaned in ecstasy as Sakurai filled her with his seed, pulling herself off of him and lying down on the bed. “So, how’d you like having sex with a Succubus?” She asked.

“It was amazing,” Sakurai said, catching his breath. “I’m just surprised we didn’t go wild.”

Uzaki’s signature grin came back as she turned towards Sakurai, “Oh we can go wild, stand up for me.” He did as she said and stood up at the edge of the bed. Uzaki blew a kiss at Sakurai, using her final spell.

Sakurai was suddenly filled with intense lust, his cock hardened as his focus was drawn to Uzaki. He couldn’t hold himself back anymore as his lust took over. He grabbed the leather straps that were wrapped around Uzaki’s legs and pulled her closer, drawing a yelp from the succubus. He wasted no time plowing into her, thrusting as hard and as fast as he could.

Uzaki was taken aback by how ravenous Sakurai had become, but she loved how rough he was being. “Yes! Yes! Faster, Harder Sakurai!” She shouted at the top of her lungs, as their anniversary night had just begun.